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SRPS H.B8.293:1986

Fertilizers — Determination of potassium content — Potassium tetraphenylborate gravimetric method (Reference method)

Apr 17, 1986
Apr 17, 1986
95.99   Withdrawal of Standard   Jul 25, 2012

General information

95.99     Jul 25, 2012

ISS

H134

International Standard

65.080  

Serbian  

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Scope

The method consists in preparing of a test solution as specified in ISO 5317, precipitating of potassium ions by sodium tetraphenylborate in a weakly alkaline medium in the presence of disodium ethylenediaminetetraacetate dihydrate (EDTA, disodium salt) and formaldehyde, followed by filtrating of the precipitate, drying and weighing.

Life cycle

NOW

WITHDRAWN
SRPS H.B8.293:1986
95.99 Withdrawal of Standard
Jul 25, 2012

REVISED BY

PUBLISHED
SRPS EN 15477:2009

Related project

Adopted from ISO 5318:1983